Brake mechanism for web-rolls.



G. A. MBNENDEZ; BRAKE MECHANISM FOR WEB ROLLS.

APPLIOATIOK FILED APR. 14, 1909.

2 SHEETS-SHEET 1.

a -1 a 4 H Patented June 4, 1912.

G. A. MENENDEZ.

BRAKE MECHANISM FOR WEB ROLLS. APPLICATION FILED APB.14, 1909.

Patented June 4, 1912.

2 SHEETS-SHEET 2.

- ton.

GABRIEL A. MENENDEZ, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE GOSS PRINTINGPRESS COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

BRAKE MECHANISM FOR WEB-ROLLS.-

Specification of Letters Patent.

Patented Ja e, 1912.

Application filed April 14, 1909. Serial No. 489,929.

' To all whom it may concern v 3' is a top or plan view; Fig.

Be it known .that I, GABRIEL A. 'MENEN- DEZ, a citizen of the UnitedStates,residing at Chicago, in the. county of Cook and State ofIllinois, have invented certain new and 'useful Improvements in BrakeMechanism roll.

In the accompanying drawings, Figure 1 is a side elevation; Fig. 2 is aside elevation with part of the frame removed; Fig. 4 is a detail, beingatop view of a portion of the web roll and a horizontal section throughthe frame showing the slide bearing of a roll hanger; Fig. 5 is adetail, being an .end view of the adjusting mechanism; and Fig. 6 is adetail, being a side view of the adjusting mechanism partially insection.

Referring to the drawings,7 indicates a portion of the roll-frame of aprinting press.

8 indicates brackets-one upon each side of the frameeach providedwith aslot 9. 10 indicates a shaft, which is located in the slot 9; inthebrackets 8 so as to rotate freely therein. 11 indicates gears, one atone end and the other near the other end of the shaft 10.

12 indicatesrack-bars, which are secured in any suitable manner upon theouter sur 'ace of the frame 7 so .as to extend outward in thesamedirection as the brackets 8 and having their-toothed surfaceparallel with the slots 9 and inv register with the gears 11, so that bythe rotation of the shaft 10 the gears, engaging the rack-bars 12, willcause the shaft 10 to move outward or inward in the slots 9. i

13 indicates. a hand-wheel, which is se-. cured upon one end of theshaft 10, by

means of which it may be turned for shifting its position in the slots9, as above de- {ijscribed p 14 indicates a lock-arm, which is pivoted-shaft10 by means frame 7 'by means of immediately end of each hangerupon the side of the frame 7 bracket 8 at one end of the press and isadapted -to be swung down so as to engage one of the gears 11 upon theopposite side from the rack-bar 1.2

and, when so engaged, to prevent the rotation of the shaft 10 and holdit in posit-ion. When it is desired to shift the shaft, the lock-arm 14is lifted above. the v away from engagement with the gear 11.

15 indicates a brake-frame composed of side bars 16 and end-bar 17 Theside bars at their outer ends are mounted upon the of suitable openingsthrough which the shaft 10 passes.

l8 indicates a brake, which is mounted in the end-bar 17 of thebrake-frame 15.

The end-bar 17 is preferably slotted longitudinally with a slot 19, andthe brake 18 is pivotally mounted therein by means of a longitudinalcentrallydisposed lug 20 which is pivoted in the slot 19 by means of apin 21. This construction is to allow the brake to automatically adjustitself in case the roll is slightly flattened atany pointso as to makeits diameter at one endas frequently happens-slightly less than at theother, and this construction enables the brake-frame to bear across theentire periphery of the ,roll. It will be seen from the abovedescription that the brake-frame 15 is pivoted on the roll-frame so asto swing on its pivot and allow the brake to keep constantly upon thesurface of the roll as the roll diminishes from being fed into thepress.

22 indicates hangers, which are slidingly mounted in the uprightportions of the lugs 23 which move freely in slots 24 in the uprightportion of the frame 7. The hangers are mounted within and bear againstthe inner surface of the frame 7 and between the bars 16 and said frame.a 25 indicates lugs, which are mounted upon or formed integral with theupper 22 and project inwardly therefrom over the side bars 16 so as toengage the upper surface of said sidebars. It will'be obvious from theabove that the hangers slide vertically in the frame by means "of thelugs 23 in the slot 24 and are supported upon the side bars 16 of thebrake-frame so as to rise and fall with said brake-frame. The lower endof each of the hangers is formed into a hook 26 which passes.

forms a journal adapted to receive and rotatably support theroll-spindle 27 of a paper roll. The frame 7 is provided upon each sidewith a vertically-extending slot 28, which is in register with the hookportion 26 of the hangers 23, and in which the ends of the roll spindle27 may move ver roll, when the roll-spindle is placed upon the brackets30, to be rolled into the hooks 26 of the hangers 22 and into registrywith the slots 28.

31 indicates a pulley, which is secured to one end of the roll-spindleoutside of one of the roll-frame uprights 7 and is provided with aperipheral slot 32.

33 indicates an arm, which is provided at one end with a suitablescrew-threaded opening through which a hand-screw 34: The hand-screw 34is screwed into the end-bar of the press. The other end of the arm 33 isprovided with a hook which is adapted to engage the slot 32 in thepulley 31[ When so engaged it is obvious that the turning of thehand-screw 34 in one direction or the other will carry the arm 33-toward or away from the side of the press,

and the hook thereon, being engaged with the slotted pulley 31, willmove the web roll in one direction or. the other for the purposes oflateral adjustment. When it is desired to remove the web roll, the arm33 is simply swung back on the hand-screw so as to disengage the hookfrom the groove 32.

The operation of the above-described device is as follows: When the rollis placed in'the press, it is laid upon the brackets 30 and rolledforward into position. Its periphery brought into contact with the brakewill force the same outward, raising the hangers 23 into the positionshown in Fig. 1; the parts being-adjusted, of course, to the ordinarysize roll. The roll then drops into the hooked ends of the hangers 22with the roll-spindle in register with the slots 28. The whole weight ofthe roll is obviously thus supported upon the sidearms of thebrake-frame, and the weight of the roll serves as the force by which thebrake is brought into contact with the periphery of the roll in order tobrake it. As the web is used up and the roll diminishes in size it isobvious that the roll-spindle descends in the slots 28, the hangersmoving downward with it, and, supported as they-are wholly upon thebrake-frame, the brake is kept in conv aoaaaea stant contact with theperiphery of the roll until the roll is exhausted.

That which I claim as my invention, and desire to secure by LettersPatent, is,-

1'. A roll-braking mechanism for printing presses having in combinationa roll-frame,

a brake-frame pivotally mounted on said roll-frame and havin its pivotsadjustable toward and away from said roll-frame, means for laterallyadjusting said brakeframe, a hanger-frame suspended from saidbrake-frame bet-ween the pivotal point andthe end of said brake frameand adapted to carry-a roll of paper, and a brake mounted'cn saidbrake-frame and adapted to bear upon the surface of said roll of paper.

2. A roll-braking mechanism for printing presses having in combination arollframe, a shaft mounted on said roll-frame and adjustable inpositions parallel with each other toward and away from said rollframe,means for adjusting saidshaft, a brake-frame carried by said shaft, ahangerframe adapted to support a roll of paper and suspended on saidbrake-frame at 'a point between said shaft and the other end of saidbrake-frame, and a brake mounted on said brake-frame and adapted to bearsubstantially throughout its entire length upon the surface of a roll ofpaper support-' ed on said hanger-frame.

3. In a mechanism for braking rolls of paper, the combination with aroll-frame provided near its upper end upon each side with a horizontalslot, a shaft slidingly mounted in said slots and adjustable therein,means for adjusting the position of said shaft in said slots, abrake-frame carried on said shaft, a brake carried by said brakeframeand adapted to bear upon the periphcry of the web-roll, vertical slotsin said rollframe, and rollhangers slidingly mounted in said slots insaid roll-frame and supported at their upper ends on said brake-framebetween the pivotal pointof said brake-' Ill frame and said brake andadapted at their A lower ends to rotatably support a web-roll.

4. In a mechanism for braking rolls of paper, the combination witharoll-frame provided near its upper end upon each side with a horizontalslot, two'rack-bars one located alongside of each slot, a shaft mountedin said slots, pinions onthe ends of said shaft engaging said rack-bars,and means for holding said shaft against rotation relative to saidrack-bars and against movement longitudinally of said slots, ofabrake-frame pivot-ally mounted on said shaft, a brake carried by saidbrake-frame, and a hangerframe suspended from said brake-frame at apoint between said shaft and said brake and adapted to carry a roll ofpaper, said brake being adapted torest upon the roll of paper carried bysaid hanger-frame.

5. In a mechanism for braking rolls of paper, the cembination with aroll-frame provided near its 'upper end upon each side with a horizontalslot, two rack-bars one located alongside of each slot, a shaft mountedin said slots, pinions on the ends of said shaft engaging saidrack-bars, and a rack-bar pivotally mounted above one of said pinionsand adapted to engage the same to prevent its rotation, of a brakerframepivotally mounted on sald shaft, a brake carried by said brake-frame,and a hangerframe suspended from said brake-frame at a point betweensaid shaft and said brake and adapted to carry a roll of paper, saidbrake beln paper earned b said hanger-frame.

GA. RIEL A. MENENDEZ. Witnesses:

' C. E. PICKARD, M. A; HUNTER.

adapted to rest upon the roll'of 15

